`sql:migrate --force` shouldn't prompt

[fredzqm]

Description

firebase dataconnect:sql:migrate --force should never prompt.

firebase dataconnect:sql:migrate should prompt for schema migrations and then abort if there is invalid connectors. This way developers can see the SQL before taking the suggesting and run it with --force.

Scenarios Tested

Sample Commands

Without invalid connectors

firebase dataconnect:sql:migrate

firebase dataconnect:sql:migrate --force

With invalid connectors

firebase dataconnect:sql:migrate

firebase dataconnect:sql:migrate --force

[fredzqm]

Thanks!

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 54.06%. Comparing base (c94b5ab) to head (1ab7ed2). Report is 43 commits behind head on master.

Files	Patch %	Lines
src/dataconnect/schemaMigration.ts	0.00%	10 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #7208 +/- ## ========================================== - Coverage 54.10% 54.06% -0.05% ========================================== Files 387 386 -1 Lines 26094 26108 +14 Branches 5358 5361 +3 ========================================== - Hits 14119 14115 -4 - Misses 10715 10733 +18 Partials 1260 1260 ```

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